BEIJING Women's Martinas Rankin Jersey , Aug. 2 (Xinhua) -- China's national weather observatory issued a yellow alert for rainstorms on Wednesday as heavy rain is expected in most of north China and some areas in the south over the next 24 hours.

The center warned local authorities to reduce outdoor activities and take precautions against flooding and geological disasters.

After releasing over 1.3 billion yuan (about 194 million U.S.dollars) earlier for emergency assistance in both agricultural and natural disasters, the central government Tuesday allocated another 1 billion yuan to aid regions affected by natural disasters.

According to the Ministry of Finance, over 60 percent of the money will be used for flood control and drought relief, while the rest will be used for restoring agricultural production in disaster-hit areas.

From Aug. 1 to 4, Typhoon Haitang and a cold front are expected to bring downpours to north China.

The State Flood Control and Drought Relief Headquarters has launched an emergency response plan and urged local governments to make due preparations.

China has a four-tier color-coded weather warning system, with red the most severe, followed by orange, yellow and blue.

China marks PLA's 90th anniversary with grand rally

Chinese premier eyes China-U.S. sub-national cooperation

China issues commemorative stamps to mark 90th birthday of PLA

China's Hunan holds firework show marking PLA founding anniv.

Military parade held to mark PLA 90th birthday (Part I)

SWAT team members take part in drill

Acrobatic show staged in China's Xinjiang

Martial arts competition held in China's Henan

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